title: [Annual changes of type distribution patterns of group A streptococci from April 1978 to March 1980 and of the drug resistance from 1974 to 1977 (author's transl)].
mesh_terms: D002701:Chloramphenicol / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D006801:Humans; D008826:Microbial Sensitivity Tests; D013297:Streptococcus pyogenes / Q000145:classification* / Q000187:drug effects; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D002701:Chloramphenicol; D013752:Tetracycline